Projecting apparatus.



A. C. R. BLOOM.

PROJECTING APPARATUS.

APPLICATION FILED MAY s. |916.

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K6 Z6 wuenfoz LHC, R, Bloom Slgrisgorjf reproductions in enlarged y,25.'fof' y ically and intermittently operated to "para'tus;and do hereby declare thefollowl This "ik Wat-'01.1. 'rel' te;v te

l 1t would be advantageous to termjittentlyjdisplay pictures of wares,

.Y lItisffa.'further object of the invention to jprovdeian advertising medium consisting ,projecting apparatus which is autofgfsuccessively project pictures in enlarged Yform u on a suitable screen which can be dispose in a store window, show case, or other suitable position.

Another rincipal object of the invention is to provi e a projectinglaplparatus of the type above mentioned w 1c is of such a simple character and arrangement of partsy that the userjor advertiser may arrange or build up a icture roll from ordinary camera films which he himself has taken and developed. In this manner, the apparatus becomes an inexpensive mechanism to operate and maintain, since the 'lms may be renewed at frequent intervals without the ayment of rentals or licenses for stock fi ms, and the films may be built up of pictures `which are strictly local or personal to the g business which is being advertised.` With the above principal objects,l and "ipothers in view, as will hereinafter appear, f my invention will now be fully set forth and described, with particular reference to the accom vanying drawings which illustrate one feinbo lment of my invention, and in which 1- Figure 1 is a vertical longitudinal eleva- '-"tinlpf the apparatus, one side of the containing receptacle havin been removed to `f7fdisclse the apparatus, Fig. 2 is a plan view maar a @time af. 4.the,United.-.States1re-., .Sui-insist ,DQSMQinQSAn thwounty .OLP-01kt; ,l haveinvntdawtain new-1 movements .in Prom/ting. AP-

" i fai-femm@ mm, I *TUS* efpeymsflreatjf )patente-Dee 5, 1916.

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j y j Fig. 3 is a diagrammaticknown ,thatfI,ADoLPrr. Crmonn vR.

view. showing the elecertical circuits and the 4 is an enlarged detail. view of a circuit c osing device used in ,c'onnection with my apparatus, Fig. 5 is a ,detail of a part of the circuit closing device, i .ing t0 .be a, ,fullflarsnd .exact dessrlptwn and Fig. 6 is a detail view showing a reducing gear which is used between the driving motor and the film operating spools.

Referring more particularly to said drawings, 1 represents a casing lor cabinet which incloses the mechanism of my improved projector, and 2 is a light-tight cone or hood, whose contracted end is secured over the lens openin 4 in which is mounted a suitable projectlng lens 5. The large end of the hond or cone 2 is fitted with a ground glass 6 which acts as a screen for any enlarged image projected from the interior of the cabinet through the lens 5. In the rear portion of the cabinet 1, and in the axial line of the lens 1 is a light source ,7, which may be an incandescent lamp of suitable candle power to roject pictures from a filmstrip a through t e lens 5 upon the ound glass or screenk 6. A reflector 7 be ind the l' ht source 7 throws the rays of the latter or- 4wardly toward the lens 5.

In the forward portion of the cabinet 1, and in proper position behind the lens 5 are disposed the upper film roll or spool 8 and the lower film roll or spool 9, said spools being` arranged in vertical alinement so as to present the film strip a in a transverse vertical lane behind the lens 5. Said spools 8 andp 9 arev of the usual type over which films are guided in motion picture projecting a 'paratuses, spurs ork teeth 10 being provide on each spool for the urpose of engagaing the usual marginal) perforations provided on film strips which are used in projecting apparatuses.

Mounted upon the base of the cabinet 1 is an electrical motor 11 which is geared toa segmentall or mutilated gear 12. The segmental gear 12 consists of a. disk which is provided with a toothed sector 13, said sector 13 being adapted to mesh, at each revolution of the segmental gear 12 with a gear Wheel 14 mounted upon one end of the spool 9. The gear sector 13 is of such length that during its engagement with thev ear 14, the film roll or strip a will be a vanced the length of one picture section.

A reducing gear, which is best illustrated in Fig. 6 is provided in order to properly time the revolution of the segmental gear 12. In said reducing gear, the shaft' 15 of the motor 11 is provided with a pinion 16 which meshes withf'a gear 17 which is suitably journaled in the frame 18. Mounted upon the shaft of the vgear wheel 17 is a pin-y ion 19 which meshes with the segmental gear 12 above referred to.

The film strip a is an endless band, which in the commercial use of my improved apparatus, may 4be furnished in regular lengths, and in sizes to fit the ordinary hand cameras which are in uniform use, so that the `user of the apparatus may hotograph specimens of his stock, or an ot er desired views, and after the usual evelopment of the roll to provide a positive film may fasten vthe ends of the latter together to form the endless band, which is then tted upon the spools 8 and 9, and is furthermore llooped over a guide arm 20 which preferably projects from one side of the cabinet 1 and 1n the position shown in Fi s. 1 and 2 so that the slack of the film wil be guided out of the line of the light rays proceeding from Athe light source 7 through the lens 5. The guide arm 20 is extended at such an angle that' the rear or slack run ofthe film is carlos loo

ried just out of the path of the light rays, and since the arm does not exert any pull upon the fihn, or the latter is not stretched taut over the arm, the film strip can not be torn. Furthermore, the angle at which the guide arm 20 is extended is arranged with relation to the upper reel '8 as not to 'cause the latter to be pul ed olf of the teeth 10.

The motor 11 and the light source 7 are furnished with current through an inlet block 21, the current for the motor passing I over the-conductors 22 and 23 in entering and returning from the motor. The current circuit which includes the light source 7 isv intermittently broken. The disk 27 is driven by the motor 11, and is also geared thereto so that the revolutionA of the disk 27 is timed in exact accord with the revolution of the mutilated ear 12. The insulating sector 28 of the isk 27 and the ear sector 13 of the segmental gear 12 are o? the same length, and the gear 12 and the disk 27 are so timed that the circuit through the light source is broken by the contact of the brush 29 'with eriphery of the disk` the sector 28 during the same period that the lm strip ais being moved to bring a fresh view before the lens 5. It will be evident from the above that the light 7 will illuminate the apparatus during the time that the film strip is at rest, butis extinguished during the time that the film stri is being stepped to bring a new view into t e line of the lens. Mounted on the frame 28 is a contact brush 27 which is in constant, electrical contact with the body of the'disk 27, and this contact carries the current to the disk 27. A reducing gear of the same type illustrated in Fig. 6 for timing the revolution of the segmental ear 12 is employed for reducing the speer? of the rotating contact disk 27 From the foregoing description it will be clear that I have provided a simple and compact apparatus for use by merchants and others which may be conveniently placed .in show Windows, show cases, and other localities, and after being set into operation for automatic projection of ictures upon the screen 6 may be dressed, to conceal the cabinet or casing, leaving the screen only visible, so that an attractive exhibit may be combined with a unique attention attracting feature. Furthermore, by my improved apparatus, an exhibitor may provide his own collection of views, so that a source of expense common to the ordinary projecting apparatuses, mainly the necessity of paying rentals or licenses for films may be avoided, and the sup ly of views in the exhibitors possession will onl be limited by the number of views Whiclill he personally desires to make. The cost of maintenanceand supply of any exhibiting matter is thus reduced to a minimum.

What I claim as my invention is 1. A projecting apparatus, comprisin n combination, a projecting lens and llght source, a power source, u per and lower reels for supportingl an end ess film in front of said projecting lens, means driven by ksaid power source for actuating lone of said reels to move the film the space of one picture at predetermined intervals, and a circuit breaker also actuated by said ower source for interrupting the current o said light source synchronously with the movement of the film.

2. A projecting apparatus, eomprisin in combination, a projecting lens, a h ht source, means for su orting the end ess film in projecting posltion in front of said lens, means for supporting the slack portion of said film out of the line of the rays passing from said light source to the lens, means for advancing said film step by step at predetermined intervals, means for; extinguishing 'said light source simultaneously with the advance of said film, said film advancing means and light extinguishing means including radial elements of like diameter and having the same radial rotating speed, and a common driving means for said rotating elements.

3. A projecting apparatus comprisin in combination, a proJecting lens, a l1 ht source, means for supporting an end ess film between said light source and said lens, a power source, a segmental gear interposed between said power source, andsaid film supporting means for advancing said film at predetermined intervals, an electric circuit including said power source, and a circuit breaker in said circuit, said circuit breaker being also actuated from said power source and including a radial element whose movement is synchronous with the movement of said segmental gear, to interrupt said circuit during the period that said film is being advanced.

4. A projecting apparatus, comprisin in combination, a proJecting lens, a llght source, a translucent screen supported in fixed relation to said lens for receiving pictures projected by the latter, means for supporting an endless film between said lens and said light source, said supporting means consisting of upper and lower reels and a guide rod disposed at one side of said reels to guide the slack portion of the Elm out of the path of light rays from said light source to the lens, means for advancing said film intermittently at predetermined periods, and means synchronous with said advancing means for extinguishing said light source simultaneously with the advance of said film.

In testimony whereof, I afiix my signature, in the presence of two witnesses.

A. CLIFFORD R. BLOOM.

Witnesses:

EDWIN J. FRIsK, J. H. ANDERSON. 

